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  1. Home
  3. Coastal Water Quality Improves During The Covid-19 Pandemic: Maui, Hawai'i.
  1. Home
  3. Coastal Water Quality Improves During The Covid-19 Pandemic: Maui, Hawai'i.

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Coastal water quality improves during the COVID-19 pandemic: Maui, Hawai'i.

Andrea K Kealoha1, Christopher B Wall2, Travis A Liggett3

  • 1University of Hawai'i at Mānoa, Department of Oceanography, Honolulu, HI, United States of America.

Marine Pollution Bulletin
|October 18, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Maui

Keywords:
COVID-19Coastal ecosystemsCoral reefsWater quality

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Area of Science:

  • Environmental Science
  • Marine Biology
  • Water Quality Analysis

Background:

  • Coastal ecosystems face threats from pollution sources like agriculture and wastewater.
  • Land-use changes also impact coastal water quality.
  • Maui, Hawai'i, provides a unique case study for assessing these impacts.

Purpose of the Study:

  • To assess spatiotemporal trends in coastal water quality on Maui.
  • To identify key drivers of water quality variability.
  • To evaluate the impact of human population on coastal water quality using the COVID-19 pandemic as a natural experiment.

Main Methods:

  • Collection of coastal water quality measurements across Maui.
  • Analysis of water samples for key parameters like nitrate and turbidity.
  • Comparison of water quality data before, during, and after the COVID-19 visitor quarantine period.

    • Main Results:

    • Nitrate and turbidity levels were highest on Maui's north shore and during winter months.
    • All monitored sites exceeded state water quality standards for turbidity.
    • Many sites also exceeded standards for nitrate.
    • Coastal water quality significantly improved during the COVID-19 pandemic due to reduced visitor numbers.

    Conclusions:

    • Agricultural and wastewater inputs, alongside natural factors like swells, significantly impact Maui's coastal water quality.
    • Human population, particularly tourism, is a major driver of coastal water degradation.
    • Reducing population-related stressors can lead to rapid improvements in coastal water quality.